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Surface Roughness of Varnished Wood Pre-Treated Using Sanding and Thermal Compression

cris.virtual.author-orcid#PLACEHOLDER_PARENT_METADATA_VALUE#
cris.virtual.author-orcid0000-0002-3800-8089
cris.virtual.author-orcid0000-0002-2060-0295
cris.virtual.author-orcid#PLACEHOLDER_PARENT_METADATA_VALUE#
cris.virtualsource.author-orcid#PLACEHOLDER_PARENT_METADATA_VALUE#
cris.virtualsource.author-orcida9b408fd-bf11-40cc-b4af-169425015799
cris.virtualsource.author-orcidba3d37ef-69d5-4dee-9704-c49b1a0a0cd8
cris.virtualsource.author-orcid#PLACEHOLDER_PARENT_METADATA_VALUE#
dc.abstract.enSurface roughness is an important factor during the processes of wood gluing and finishing. This study proposed a new approach for the preparation of wood veneer surfaces before varnishing through the use of thermal compression instead of sanding. The quality of the pre-treated surface was examined using surface roughness measurements. In the experiment, a wood veneer of black alder and birch, before varnishing, was subjected to sanding with a sandpaper of 180 grit size, and thermal compression at temperatures of 180 and 210 °C. Three different types of commercially manufactured varnishes (water-based (WB), polyurethane (PUR) and UV-cured (UV)) were applied to the prepared veneer surfaces with various numbers of varnish layers. Seven roughness parameters such as Ra, Rz, Rq, Rp, Rv, Rsk, and Rku were determined for the sanded and thermally densified unvarnished and varnished surfaces. The profile surface was recorded with a portable surface roughness tester along and across the wood fibers. It was found that there was no difference between the surface roughnesses of the surfaces that had been sanded and the surface roughnesses of those that had been thermally densified at a temperature of 210 °C. The research suggests that thermal compression at a temperature of 210 °C is enough to obtain smoother surfaces with a UV varnish system, and this process can be recommended as a replacement for sanding before varnishing as the most labor-intensive and expensive operations in woodworking industry. Applying two layers of varnish along with intermediate sanding was also sufficient to obtain a satisfactory finish.
dc.affiliationWydział Leśny i Technologii Drewna
dc.affiliation.instituteKatedra Nauki o Drewnie i Techniki Cieplnej
dc.contributor.authorBekhta, Pavlo
dc.contributor.authorLis, Barbara Teresa
dc.contributor.authorKrystofiak, Tomasz
dc.contributor.authorBekhta, Nataliya
dc.date.access2026-02-16
dc.date.accessioned2026-03-02T12:24:24Z
dc.date.available2026-03-02T12:24:24Z
dc.date.copyright2022-05-17
dc.date.issued2022
dc.description.accesstimeat_publication
dc.description.bibliographyil., bibliogr.
dc.description.financepublication_nocost
dc.description.financecost0,00
dc.description.if2,9
dc.description.number5
dc.description.points100
dc.description.versionfinal_published
dc.description.volume13
dc.identifier.doi10.3390/f13050777
dc.identifier.issn1999-4907
dc.identifier.urihttps://sciencerep.up.poznan.pl/handle/item/7557
dc.identifier.weblinkhttp://www.mdpi.com/1999-4907/13/5/777
dc.languageen
dc.relation.ispartofForests
dc.relation.pagesart. 777
dc.rightsCC-BY
dc.sciencecloudnosend
dc.share.typeOPEN_JOURNAL
dc.subject.ensurface roughness
dc.subject.ensanding
dc.subject.enthermal compression
dc.subject.envarnish system
dc.subject.enwood veneer
dc.titleSurface Roughness of Varnished Wood Pre-Treated Using Sanding and Thermal Compression
dc.title.volumeSpecial Issue The Role of Wood Gluing and Finishing Technologies in a Sustainable World
dc.typeJournalArticle
dspace.entity.typePublication